参数资料
型号: 73M1903-IMR/F
厂商: MAXIM INTEGRATED PRODUCTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC32
封装: ROHS COMPLIANT, QFN-32
文件页数: 36/47页
文件大小: 541K
代理商: 73M1903-IMR/F
DS_1903_032
73M1903 Data Sheet
Rev. 2.1
41
R3
100 K
1
Rwtot
600
1200
where
Rwtot RW
Rohswitch
2 Rbead
.
R2 100 K
R3
Use 1% resistors for R1, R2, and R3.
To select the value for C1, make the zero at around 10 Hz.
1
2
π
. 100
.
K C1
.
10
C1
1
2
π
. 100
.
K 10
.
C1 0.15 uF
The blocking cap Cblock should also have the same frequency response, but due to the low impedance,
its value will be much higher, usually requiring a polarized cap. A blocking cap may also be needed on
the modem side of the transformer if the DC offset current of the transmit pins will exceed the current
rating for a dry transformer circuit.
Cblock
1
2
π
. 600
.
10
.
Cblock 27 uF
If you are using a Wet transformer design, as in the following figure:
The only difference is that the blocking capacitor, Cblock, it is removed. All other equations still hold true.
Trans-Hybrid Loss (THL)
Trans-Hybrid Loss is by definition the loss of transmit signal from Tip/Ring to the receive inputs on the
modem IC. This definition is only valid when driving a specific phone line impedance. In reality, phone
line impedances are never perfect, so this definition isn’t of much help. Instead, as an alternate definition
that helps in analysis for this modem design, THL is the loss from the transmit pins to the receive pins.
相关PDF资料
PDF描述
73M1903-IVT/F SPECIALTY CONSUMER CIRCUIT, PDSO20
73M1903-IVTR/F SPECIALTY CONSUMER CIRCUIT, PDSO20
73M1903C-IM/F SPECIALTY CONSUMER CIRCUIT, PQCC32
73M1903C-IMR/F SPECIALTY CONSUMER CIRCUIT, PQCC32
73M1903C-IM SPECIALTY CONSUMER CIRCUIT, QCC32
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73M1903-IVTR/F 功能描述:IC MODEM AFE V.22BIS 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模拟前端 (AFE) 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:- 通道数:2 功率(瓦特):- 电压 - 电源,模拟:3 V ~ 3.6 V 电压 - 电源,数字:3 V ~ 3.6 V 封装/外壳:32-VFQFN 裸露焊盘 供应商设备封装:32-QFN(5x5) 包装:带卷 (TR)
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